An improved procedure to prepare 3-methyl-4-nitroalkylenethylisoxazoles and their reaction under catalytic enantioselective Michael addition with nitromethane

2015 ◽  
Vol 13 (7) ◽  
pp. 2192-2195 ◽  
Author(s):  
Maria Moccia ◽  
Robert J. Wells ◽  
Mauro. F. A. Adamo
Keyword(s):  
Michael Addition ◽  
Phase Transfer Catalysis ◽  
Phase Transfer

A two-step preparation of 3-methyl-4-nitro-5-alkylethenyl isoxazoles is herein reported. These were reacted with nitromethane under phase-transfer catalysis to provide highly enantioenriched adducts (up to 93% ee).

Michael Addition of 2-Phenylcyclohexanone to Chalcone Under Phase-Transfer Catalysis Conditions

1997 ◽  
pp. 181-189 ◽  
Author(s):  
Enrique Diez-Barra ◽  
Antonio de la Hoz ◽  
Sonia Merino ◽  
Prado Sánchez-Verdú
Keyword(s):  
Michael Addition ◽  
Phase Transfer Catalysis ◽  
Phase Transfer

Phase-transfer catalyzed asymmetric synthesis of α,β-unsaturated γ,γ-disubstituted γ-lactams

2017 ◽  
Vol 53 (35) ◽  
pp. 4779-4782 ◽  
Author(s):  
Alexander Arlt ◽  
Hideaki Toyama ◽  
Koji Takada ◽  
Takuya Hashimoto ◽  
Keiji Maruoka
Keyword(s):  
Asymmetric Synthesis ◽  
Michael Addition ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Chiral Phase

The direct, γ-selective vinylogous Michael addition of unsaturated γ-monosubstituted γ-lactams was realized by using chiral phase-transfer catalysis.

ChemInform Abstract: Michael Addition of 2-Phenylcyclohexanone to Chalcone under Phase- Transfer Catalysis

ChemInform ◽  
2010 ◽  
Vol 28 (34) ◽  
pp. no-no
Author(s):  
E. DIEZ-BARRA ◽  
A. DE LA HOZ ◽  
S. MERINO ◽  
P. SANCHEZ-VERDU
Keyword(s):  
Michael Addition ◽  
Phase Transfer Catalysis ◽  
Phase Transfer

Asymmetric Michael addition of malonic diesters to acrylates by phase-transfer catalysis toward the construction of quaternary stereogenic α-carbons

Tetrahedron ◽  
2019 ◽  
Vol 75 (2) ◽  
pp. 209-219 ◽  
Author(s):  
Yuki Odanaka ◽  
Takuya Kanemitsu ◽  
Kanako Iwasaki ◽  
Yukiko Mochizuki ◽  
Michiko Miyazaki ◽  
...  
Keyword(s):  
Michael Addition ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Asymmetric Michael Addition
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